농어(Lateolabrax japonicus) 아가미의 형태와 미세구조

강충배,김진구,김재원,Kang, Chung-Bae,Kim, Jin-Koo,Kim, Jae-Won 한국현미경학회 2009 Applied microscopy Vol.39 No.4

Morphology of the gill in Lateolabrax japonicus was investigated after staining the gill, as a result, we found the gill is composed of gill raker, gill arch, gill filament and gill lamellae. The number of gill raker was 7~10 in the upper and 13~18 in the lower. Ultrastructure of the gill in Lateolabrax japonicus were examined by means of the light and transmission electron microscopes. The gill have primary filament and secondary filament (lamellae). The following cells are identified and described: pavement cell, pillar cell, blood cell, mucose cell and chloride cell etc. Simple epithelial layer consists of squamous epithelium contained large nucleus, intracellular organelles etc. and the surface is covered with some of microridges. The lamella pillar structures are characterized by the axial microtubules and lateral membrane interdigitations. The mucous cells were globular in shape, and had almost the mucous granules of same size with various electron density. Chloride cells contain a lot of mitochondria and specifically developed tubular systems. 농어 아가미는 새파, 새궁, 새엽 및 새판으로 구성되어 있었다. 위쪽 새파수는 7~10개이며, 아래쪽 새파수는 13~18개로 조사되었다. 농어 아가미의 주요부위인 새엽과 새판(이차새엽)을 광학현미경과 투과전자현미경에서 관찰한 결과는 다음과 같다. 농어 아가미는 새궁(gill arch) 외연의 앞 뒤 2열로 된 긴 점막성의 빗살과 같은 모양으로 줄지어 있는 많은 수의 새엽(gill filament)을 가지고 있으며, 각 새엽은 전후 두개의 새판(gill lamellae)이 근접하여 두 열로 배열되어 있었다. 농어의 새판은 pavement cell, 기둥세포(pillar cell), 혈구세포, 점액세포(mucose cell) 및 염류세포(chloride cell) 등으로 구분되었다. 새판의 표면은 단층으로 큰 핵을 가진 pavement 세포로 구성되며, 상피표면의 glycocalyx로 덮혀진 미세융기를 가진다. 그리고 새판은 기둥세포와 혈구세포와 일정한 간격을 두고 분포하고 있었다. 점액세포는 새판에 드문드문 나타났지만 새엽에 많이 분포하고 있으며, 염류세포는 미토콘드리아와 tubular system이 잘 발달되어 있었다.

한국산 점농어(Lateolabrax maculatus) 자치어의 골격발달과 비늘형성

강충배 ( Chung Bae Kang ),명정구 ( Jung Goo Myoung ),김용억 ( Yong Uk Kim ),김형철 ( Hyong Chol Kim ) 한국수산과학회 2012 한국수산과학회지 Vol.45 No.3

Early osteological development of the skull, vertebral column, and fins, and squamation in the spotted sea bass, Lateo-labrax maculates, were studied under extensive larval rearing conditions. The first ossification during cephalic skeleton development began with the premaxillary, dentary, and parasphenoid at 6.4 mm Total length (Notochord length 6.1 mm) and was completed by 25.2 mm TL (Standard length 20.3 mm). Ossification of the cartilaginous caudal complex started simultaneously in the urostyle and two preural centra at 12.2 mm TL (10.4 mm) and it was completely ossified by 32.0mm TL (26.4 mm). The principal caudal fin rays, with a count of 9/8, began to ossify at 11.6 mm TL (10.2 mm) and the procurrent caudal fin rays, with counts of 4 (upper) and 3 (lower), started to ossify by 12.6 mm TL (10.9 mm). Ossification of these parts was completed by 21.4 mm TL (17.5 mm). Ossification of the vertebral column was first observed in the first to fourth centra at 8.3 mm TL (7.5 mm) and was fully completed by 21.7-35.0 mm TL (17.8-29.3 mm). The pectoral girdle started to ossify by 5.6 mm TL (5.4 mm) and was completed by 26.8 mm TL (21.8 mm). Eight pectoral fin rays were ossified at 11.6 mm TL (10.2 mm) and 16-18 rays were fully ossified by 13.8 mm TL (12.0 mm). Also, the dorsal, anal, and pelvic fin rays started to ossify at 12.2 mm TL (10.4 mm) and were completed by 12.8 mm TL (11.2mm), 23.8 mm TL (19.4 mm), and 13.8 mm TL (12.0 mm), respectively. Ossification of the anal and dorsal pterygiophores initially occurred by 12.6 mm TL (10.9 mm) and 14.3 mm TL (12.2 mm), and was completed by 21.4 mm TL (17.5 mm) and 19.3 mm TL (15.9 mm), respectively. Squamation started at three centers of differentiation: the middle region of the trunk, the anterior of the caudal peduncle, and on the caudal peduncle at 23.8 mm TL (19.4 mm). The body was covered with scales, except the snout, at 57.2-60.2 mm TL (SL 47.1-49.2 mm).

한국산 Somniosidae 어류 1 미기록종, Somniosus pacificus

강충배 ( Chung Bae Kang ),이우준 ( Woo Jun Lee ),김진구 ( Jin Koo Kim ),정혜경 ( Hye Gyeong Jung ) 한국어류학회 2015 韓國魚類學會誌 Vol.27 No.1

돔발상어목 Somniosidae에 속하는 Somniosus pacificus 1개체가 2008년 2월 강원도 강릉해역에서 채집되었다. 본 종은 두 등지느러미 사이의 길이가 주둥이에서 첫 번째 새열까지의 길이보다 짧으며, 주둥이에서 첫 번째 등지느러미 사이의 길이가 전장의 45%를 넘고 몸은 전체적으로 잿빛을 띠는 특징을 가진다. 우리나라에서 처음 보고되는 본 종의 새로운 과명, 속명 및 종명으로 “잠상어과”, “잠상어속” 및 “잿빛잠상어”를 제안한다. A single specimen (192 cm total length, TL) of the Pacific sleeper shark, Somniosus pacificus, belonging to the family Somniosidae, order Squaliformes, was firstly collected from the west margin of the East Sea, Korea in February 2008. This specimen was characterized by having interdorsal space, being less than the distance between the snout and first gill opening; and the distance between the snout and first dorsal fin origin more than 45% TL; head and body has overall dark brownish. The new Korean name “Jam-sang-eo-gwa” is proposed for the family Somniosidae, and “Jam-sang-eo-sok” for the genus Somniosus, and “Jat-bit-jam-sang-eo” for the species S. pacificus.

한국 제주도에서 채집된 곰치과(Muraenidae) 어류 1 미기록종, Gymnothorax pseudothyrsoideus

강충배 ( Chung-bae Kang ),송영선 ( Young Sun Song ),박진우 ( Jin Woo Park ),김진구 ( Jin-koo Kim ),정현경 ( Hyeon Gyeong Jeong ) 한국수산과학회(구 한국수산학회) 2018 한국수산과학회지 Vol.51 No.3

A single specimen of Gymnothorax pseudothyrsoideus (424.0 mm TL) belonging to the family Muraenidae, order Anguilliformes, was collected from Jeju Island, Korea, for the first time. The specimen is characterized by jaws closing completely, canine teeth on jaws, teeth not exposed when mouth is closed, ovoid posterior nostril, and body color ranging from yellowish brown to brownish with small dark spots aggregating to form larger spots that from approximately four irregular rows along the body. A comparison of mitochondrial DNA 16S rRNA sequences indicated that this specimen corresponds well with G. pseudothyrsoideus (K2P distance, d=0.002) but differs from other Gymnothorax species (11.9-13.7%). Therefore, the new Korean name “Geu-mul-nun-gom-chi” is proposed for the species G. pseudothyrsoideus.

한국산 바다뱀장어과 (개칭) (Ophichthidae: Anguilliformes) 어류의 종 목록 및 국명 개칭

지환성 ( Hwan-sung Ji ),강충배 ( Chung-bae Kang ),김진구 ( Jin-koo Kim ) 한국어류학회 2021 韓國魚類學會誌 Vol.33 No.4

A checklist of snake eels (Ophichthidae) from Korea is presented including information, such as synonyms, distribution, occurrence records and key to species of 7 genera and 14 species. Also, we suggest change of the Korean names for the snake eels (Ophichthidae) “Ba-da-baem-gwa” to “Ba-da-baem-jang-eo-gwa”, and it’s members, because Korean names of snake eels (Ophichthidae) is similar to those of sea snake (Hydridae).

경상북도 후포와 강원도 장호에서 정치망으로 채집된 어류 종조성 비교

강정하 ( Jung Ha Kang ),김이경 ( Yi Gyeong Kim ),박중연 ( Jung Youn Park ),김진구 ( Jin Koo Kim ),유정화 ( Jung Hwa Ryu ),강충배 ( Chung Bae Kang ),박정호 ( Jeong Ho Park ) 한국수산과학회 2014 한국수산과학회지 Vol.47 No.4

Two major temperature fronts, the Subpolar (Gosung, Gang-won-do; 38°-41° N) and Thermal (Jukbyun, Gyeong-sang-buk-do; 36°-37° N) fronts, are found in the East Sea along the east coast of Korea. These are located roughly where the Tsushima Warm Current and North Korea Cold Current intersect. To clarify the effect of the Thermal Front, we investigated seasonal variation in fish species composition using set nets in two areas located north (Jangho, Gang-won-do) and south (Hupo, Gyeong-sang-buk-do) of Jukbyun, Gyeong-sang-buk-do, and compared the sea water temperature and salinity. We collected a total of 38 fish species in Hupo and 25 in Jangho. Trachurus japonicus was the most common species at both sites, but the subdominant species differed. At Hupo, the subdominant species were Konosirus punctatus and Diodon holocanthus, whereas Clupea pallasii and Scomber japonicus were subdominant at Jangho. Based on Froese and Pauly (2014), subtropical fishes accounted for 55% of fish in Hupo but only for 33% in Jangho. The difference in fish species composition was most obvious in May and August. According to the Korea Hydrographic and Oceanographic Administration, sea surface temperature and salinity were slightly higher at Hupo than at Jangho. Our findings suggest that the oceanographic boundary resulting from the Thermal Front near Jukbyun, Gyeong-sang-buk- do may have a major effect on the distribution of migratory fish species.

황점볼락(Sebastes oblongus) 자치어의 골격발달

변순규 ( Soon Gyu Byun ),강충배 ( Chung Bae Kang ),명정구 ( Jung Goo Myoung ),차반석 ( Ban Seok Cha ),한경호 ( Kyeong Ho Han ),정춘구 ( Choon Goo Jung ) 한국어류학회 2012 韓國魚類學會誌 Vol.24 No.2

사육 중인 친어로부터 자연 산출된 자어를 2007년 12월부터 2008년 5월까지 수조에서 사육하면서 자치어의 성장 에 따른 골격발달과정을 관찰하였다. 산출직후의 자어는 어 떠한 골격요소도 전혀 골화되지 않았다. 부화 후 3일째의 평균전장 8.0mm에 처음으로 턱뼈의 골화와 함께 액골, 노 정골, 쇄골, 새개골, 새조골 등의 골화가 시작되었다. 새개부 를 구성하는 골격들은 12.3mm에 골화가 모두 완료되었으 며, 두개골과 견대골을 구성하는 골격들은 평균전장 16.2 mm에 골화가 완료되었다. 미골복합체는 평균전장 9.8 mm 에 하미축골의 골화가 시작되었고 이후 평균전장 10.8mm 에 1번째와 2번째 하미축골 및 3번째와 4번째 하미축골이 서로 융합이 일어났으며, 평균전장 18.0 mm에 마지막으로 상미축골이 골화되어 모든 골격이 완료되었다. 척색의 굴절 은 평균전장 8.5mm에 형성되어 평균전장 10.8mm에 완료 되었으며, 26개로 구성된 척추골의 골화는 13.2mm에 완료 되었다. 안와골의 골화는 안전골은 평균전장 10.8 mm에서 안하골은 평균전장 12.3 mm에서 골화가 시작되었으며, 평 균전장 27.5 mm에 완료되었다. 최종적으로 부화 후 71일, 평균전장 27.5mm에 모든 골격의 골화가 완료되었다. Skeletal development in the oblong rockfish, Sebastes oblongus, was studied based on extensive larval rearing conditions from December 2007 to March 2008. Newly-hatched larvae lacked osteological elements, After 3 days of bearing, jaw bones were ossified almost simultaneously with the frontal, parietal, clavicle, opercle, preopercle and branchiostegal rays at 8.0 mm average total length (TL). Ossification of the opercular was completed by 12.3 mm and the full complement of ossified elements of cranium and pectoral girdle were completed by 16.2 mm. Ossification of the cartilaginous caudal complex began to at 9.8 mm, and completely ossified by 18.0 mm. The fusing of the first and second, and the third and fourth hypurals initially occurred by 10.8 mm, and their fusion was finally completed at 18.0 mm. Notochord flexion occurred and formed an individual centrum by 8.5 mm and 10.8 mm, respectively, and all 26 centra were ossified by 13.2 mm. The preorbital bone began to ossify on the anterior region of eye at 10.8 mm, and the 1st suborbital bone appeared ossified on the lower of eye by 12.3 mm, and all elements were ossified at 27.5 mm. Finally, after 71 days of bearing, the juveniles became 27.5 mm, and ossification was completed at this stage.

1994-1997년 봄철 동중국해 및 황해 자치어 분포

김진구 ( Jin Koo Kim ),강충배 ( Chung Bae Kang ),안건 ( Geon Ahn ),김용억 ( Yong Uk Kim ),( Daiju Oki ),( Osame Tabeta ) 한국수산과학회 2005 한국수산과학회지 Vol.38 No.1

N/A The distributions of fish larvae and juveniles from the East China Sea, Yellow Sea and near Tsushima Island were investigated in Spring using the Maruchi (1994-1995) and Unagi (1996-1997) nets. A total of 94 species of fish larvae and juveniles belonging to 49 families under 17 orders were identified, of which Eugraulis japonicus was dominant in every year except 1995 where Trachurus japonicus was dominant. Cluster analysis based on abundance and species composition by sampling stations (St.) revealed that the similar stations formed an arcuate group from Tsushima Island to southern Jeju Island in 1994, and from the Yellow Sea to southern Jeju Island in 1996. We concluded that these patterns resulted from the influence of the Tsushima Current prevailing in the east, and the Chinese Continental Waters and/or Hwanghae Cold Waters prevailing in the west, with Jeju Island exerting an influence in the centre. The diversity and composition of St. 97-3 and St. 97-5, both located where the Tsushima Current splits from the Kuroshio Current, was greatly different despite their close proximity. However, the former is located on the continental shelf, with the latter on the continental slope. This suggested that both topography and the Kuroshio Current have the most influence on the distribution of fish larvae and juveniles in this region. Furthermore, the weak Hwanghae Cold Waters of 1997 may have also limited the mixing of fish larvae and juveniles between the two stations.

한국산 점줄횟대 Cottiusculus nihonkaiensis (둑중개아목, 둑중개과)의 분류학적 재검토

진주원 ( Ju-won Jin ),강충배 ( Chung-Bae Kang ),김진구 ( Jin-koo Kim ) 한국어류학회 2023 韓國魚類學會誌 Vol.35 No.2

The genus Cottiusculus Jordan and Starks 1904 (Cottoidei: Cottidae) comprises four species worldwide, three species in Japan, and two species in Korea. Cottiusculus species are characterized by a compressed head and body without scales, except for lateral-line scales, a preopercle with four spines, a curved uppermost preopercular spine with small dorsal spines, and teeth on the upper jaws, vomer, and palatines. Two Cottiusculus species have been recorded in Korea: Cottiusculus gonez and Cottiusculus nihonkaiensis. Among these, “jeom-jul-hoet-dae” specimens were initially identified as Cottiusculus schmidti by many Korean Ichthyologists. However, since C. nihonkaiensis was reported by Kai and Nakabo (2009), most such specimens have been identified as C. nihonkaiensis. To clarify the taxonomic status of “jeom-jul-hoet-dae”, we conducted morphological and molecular analyses collected from the coasts of South Korea, and compared our findings with previous reports. Japanese and Korean C. nihonkaiensis specimens mostly consistent in some proportional measurements, our molecular results indicate that they are the same species. C. nihonkaiensis, “jeom-jul-hoet-dae” distinguished from other congers by combination of following characters: simple nasal spines, two branched cirri at the upper jaw, cirri at the opercular, preopercular, and lateral lines, and a number of blotches below the lateral line.

단보 : 찰가자미(Microstomus achne) 초기생활기의 상대 성장

변순규 ( Soon Gyu Byun ),강충배 ( Chung Bae Kang ),한경호 ( Kyeong Ho Han ),김진구 ( Jin Koo Kim ) 한국수산과학회(구 한국수산학회) 2013 한국수산과학회지 Vol.46 No.6

We examined the relative growth of Microstomus achne during early life stages of laboratory-reared larvae and juveniles. Turning points in the relative growth of preanal length and upper jaw length against total length occurred during the settlement period (11.12-19.91 mm in total length). However, turning points in the relative growth of head length and eye diameter, as compared to total length, occurred during metamorphosis (17.57-22.47 mm in total length). Our results suggest that Microstomus achne concentrates its energy on the feeding apparatus (jaw) and digestive organs (intestine) rather than sensory or neural organs (eye, head)during early larval stage growth